8.28. Model:Treat the man as a particle. The man at the equator undergoes uniform circular motion as the earth rotates. Visualize:Solve:The scale reads the man’s weight G,Fn=the force of the scale pushing up against his feet. At the north pole, where the man is in static equilibrium, PG735 NnFmg== =At the equator, there must be a net force toward the center of the earth to keep the man moving in a circle. The r-axis points toward the center, so 222GEEPrFFnmr nmgmrnmrωωω=−=⇒= −
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at University of Georgia Athens.